Shaking conveyer



4Jam. 5, 1937. H. GU'BE f 067,122y

SHARING coNvEYER Filed June 16, 1936 2 sheets-sheet 1 v Patented isn. 5, 1.937

UNITED. STATES.

snAxmG coNvEYER Heinrich Grube, Bochum, Germany, assigner to v Gebr. Eickhoif Maschinenfabrik und Eisengiesserei, Bochum, Germany Application June 16, 1936, Serial No. 85,598

v In Germany November 28. 1934 8 Claims.

The present invention relates to reciprocating shaker conveyers and more particularly to that kind of conveyer the sections of which are joined together by means of fiat attachments projecting beyond the side of the trough. Hitherto these attachments have been arranged transversely beneath the trough in form of at irons `with their ends projecting beyond the base of the trough and have carried the trough connect- 1'0 ing means. Unless these elements are made v very strong their projecting ends readily frac ture u nder the considerable alternating stresses to which they are subdued, and if iat irons of a e corresponding strength are employed for example in the form of gusset plates, then in comparison with the trough they are the stronger component, with the `result that the localization of stress at the sudden changes incross section endangers the sheet metal of Ithe trough and the troughs readily tear atthe margins of the transverse members at the points where the material is subdued to thel largest stress. This effect cannot be improved materially by welding the transverse members to the trough instead of riveting them, because in such a case also the sheet metal of the trough has to take y'up the main stress at `the inward edge of the-transverseI member and would be subjected to excessive strain at that point even with a welded connection.

According to the invention Vthe mechanical properties of the connecting members are better adapted to those of the material of the trough by abondoning the use of transverse members extending beneath the trough for transmitting the force and by welding a 1in-like attachment to the lateral wall of the trough on each side of the trough. This construction is based on the recognition that such ya mode of connecting an attached member to the lateral wall of the trough 40 not only successfully withstands the forces arising in the conveyer but isalso more favourable for transmitting the forces from the connecting members to the trough than the transverse members extending beneath the base of the trough where the forces are to be transmitted solely by these means. In particular. by suit-V able conflguration of the attachment and by appropriately dimensioning the sluiaces of contact with the the Walls of the trough, it is possible to allow the forces to be takenup by the walls of the trough without excessive local stresses. For this purpose .the attachments are given a cross sectional form which from the point at which the connecting means are applied decreases in dimensions towards the ends of the attachments in the longitudinal direction of the trough, so that at their ends the attachments are more flexible and thus the occurrence of peak stresses isl avoided, whereas hitherto the points at which the rigid transverse members 5 were attached to the trough were points -which had to sustain excessive strain and transmit such strain to the trough.

The construction of the transverse members in the form of 'lateral projections welded to the 104 walls of the trough affords a further advantage.

The possibility is aorded of disposing the attachments at least approximately at the level' of the centre of gravity of the profile of the trough which gives the advantage that the metal 15 walls of the trough are not Vsubjected to a bend-v ing stress over their length. If the connecting members have the form of transverse struts extending obliquely downwardly beneath the trough as has hitherto been customary then it is 20 certainly possible for the ends `which carry the connecting means to be bent up to the level of the centre of gravity of the profile of the trough. However, in this case the transverse members are subjected to a very unfavourable strain as they 5 comprise not only elements lying in the plane inv which the force is applied but also elements which lie outside thisI plane and consequently have to withstand torsional forces. Also in this case, the conveyer trough is subjected to bending stresses by the tractional and thrust forces acting on the trough. If, however, the connecting members are arranged in, or approximately in, the plane passing through the centre of gravity of the profile of the trough, then there is no tor- 35 sional stress on the connecting members and there is no bending stress on the trough. If dev sired the attachments may be supported by n means of a lower extension bearing against the bottom of the trough and in addition the contact 40` surface of the attachments can be such as to reinforce the lateral wall of the trough, the reinforcing member preferably being directed towards the end or ends o1 the weld at the edge of the base. Finally the attachments may constitute a part 45 of the actual wall of the trough.

In the accompanying drawings Fig. 1 shows in cross section one embodiment of a conveyer trough in accordance with the invention.

Figs. 2 to 4 show a second embodiment in side 50 view, plan view and fragmentary'cross section.

Fig. 5 shows a third and Fig. 6 a fourth embodiment,

Fig. '1 shows a fifth and Fig. 8 a sixth embodiment, 55

Fig. 9 shows a seventh and Fig. 10 an eighth embodiment,

Figs. 11 and 12 show a ninth embodiment in side view and in cross section.

At both ends of the trough sections a, which may have any desired customary cross section form, attachments b are welded to and pronot be subjected to the excessive stress at the inward end e or at both ends of the attachment b, the attachments taper from the part f which carries the connecting means towards both ends either in width only as shown in Fig. 3, or in height as shown in Fig. 4, or in both directions as shown in Fig. 2, so that at their ends the attachments merge smoothly into the profile` of the trough and no localized stresses arise at the common surfaces. Moreover, as shown in the drawings, the attachments b are so shaped that a welded seam c is obtained at or near the lower edge of the trough.

The projecting portion f of the attachments b will be shaped in accordance with the nature lof the connecting means employed. For example,

as shown in Figs. 1 to 4, the attachments b may have iiat projecting strips `forco-cperation with yokes on similar connecting means; in Figs. 5 and 6 the attachments b have a loop-like form to receive connecting screws, in which case the attachment may be a rolled member as shown in Fig. 5 or it may be a tubular element with strips welded thereto as shown in Fig. 6. Also, where the attachments have the shape of flat strips they may be in part hollow as indicated in Figs. '1 and 8 instead of being solid as in Fig. 4. In the embodiment shown in Fig. 8, the plate. bl serves substantially for supporting the plate b and in this case the plate b is subjected to stresses only in its own plane by the forces which it transmits. Moreover, as indicated in Fig. 9, the attachments bI may extend beneath and bear against the bottom of the trough so as to obtain additional support. As also shown in Fig. 9, the side walls of the trough may be interrupted at d where .further welded seams are provided. If desired, more than one interruption can be provided.

As shown in the modification, according to' Fig.

10, the attachments b may also constitute a partof the actual walls of the trough.

In addition, as shown in Figs. l, 2, 4 and 6 and in Figs. 'l to 10, the attachments may be arranged so that at least the part carrying the connecting means is disposed at the level of the centre of gravity s of the prole of the trough, so that the metal plates constituting the trough aoemaa are not subjected to a pending stress over their entire length.

AsA shown in Figs. 11 and 12, the attachments may include a fork g carrying clamping means i and an inverted U'shaped loop h opening downwardly into which the clamping means i associated with the adjoining trough section can be pivoted. As shown in Fig. 11, the two attachments g and h may'be provided with cylindrical contact surfaces k. As indicated on the right hand side of Fig. 12 the shaft 9' on which the clamping means i pivots may also serve as the shaft carrying the running wheel of the trough.

In all these cases the attachments may be taperedtowards one or both ends in the manner indicated in Figs. 2 and 3.

I claim:

l. In combination with a shaking conveyer trough, connecting means including an element comprising two parts projecting transversely from a lateral wall of said trough, one of said parts adapted to be connected to an adjacent trough, said second part securedvat vone end to said rst part and welded at the other end to at least one of the walls of said first trough, said second end gradually decreasing in width .in longitudinal direction of said walls at least at one side of said iirst part so as to merge gradually into said Wall.

2. In combination with a shaking conveyer trough, connecting means including an element comprising two parts lprojecting transversely from a lateral wall of said trough, one of said parts adapted to be connected to an adjacent trough, said second part secured at one end to -said ilrst part and welded at the other end to at least one of the walls of said rst trough, said second part gradually decreasing inv thickness from said rst end toward said second end at least at one side of said first element, said second end gradually decreasing in width in longitudinal direction of said wall at least at one side of said first element so as to merge gradually into said wall.

3. A shaking conveyer according to claim l, said second part being welded to said first trough adjacent the lower edge of ksaid lateral wall. 4. A shaking conveyer according to claim l. said second part constituting a reinforcement of said walls.

5. A shaking conveyer according to claim 1, at` least one of said walls having an opening therein, said second part being welded to said wall to close said opening.

6. A shaking conveyer according toclaim 1, said first part comprising a -iiat element adapted to be embraced by a pivotal yoke.

7. A shaking conveyer according to claim 1, said second part forming a portion of said wall.

8. A shaking conveyer according to claimfl,

said ilrst part including an eye adapted to receive a connecting screw.

HEINRICH GRUBE. 

